The 2026-10-21 NASA archive snapshot gives 2 m/s for a published KOI-2513.01 amplitude of 2 km/s
We tested radial velocity amplitudes in a saved NASA Exoplanet Archive Planetary Systems response from 21 October 2026. Of 5,005 solution rows, 1,315 passed the stated data and source rules. We formed physical input intervals at three times each listed error, with numeric rounding allowances. Only the Cañas et al. (2023) row for KOI-2513.01 had no overlap between its measured amplitude interval and the range of the two-body equation. The archive gives 2.0 plus or minus 0.1 m/s. The cited Table 8 gives the same numbers in km/s. The required conversion is 2,000 plus or minus 100 m/s. All five other tested quantities and their errors match the source tables. The mass and orbit intervals permit 1,164 to 2,976 m/s. The 20 corrected public velocities also require at least 1,110 m/s if one Kepler signal, a constant offset, and errors bounded by three listed errors apply. This bound includes integer rounding. A fit with the published orbit shape gives 2,021 m/s. These are checks of a known brown dwarf companion. They do not establish a new planet or a probability of discovery. The package preserves the query, frozen data, source table images, code, selection decisions, proposed correction, figures, and validation results. A full repeat reproduced all numerical results and figures exactly on the recorded runtime. The external archive was not changed.
radial velocity · NASA Exoplanet Archive · KOI-2513.01 · brown dwarfs · unit conversion · catalog validation · interval bounds · reproducible astronomy
References
6- usesdoi:10.26133/NEA12
The frozen Planetary Systems response supplies the archive solution rows. The query, retrieval times, and exact bytes are preserved.
- usesdoi:10.3847/1538-4365/acbcbe
Tables 7, 8, and 9 supply the source values and units for KOI-2513.01. The paper supplies the observations and published orbit shape.
- usesdoi:10.3847/1538-4365/acfb7e
The saved CDS Table 5 contains the corrected radial velocities identified in the erratum and catalog history.
- doi:10.1051/0004-6361/202554739
Section 6.1 gives prior checks of masses from reported orbit parameters. This is context for catalog consistency tests.
- usesdoi:10.3847/0004-6256/152/2/41
The amplitude equation uses the IAU 2015 nominal solar and Jupiter mass parameters as conversion constants.
- K2-285 table values cannot share one stellar mass within three listed errors under a two-body model with each companion mass at most 0.08 solar masses sci:sha256:b54de8ad59820ff11c1dca9bc0b066bfa992a7d156182fe379d6733be2125891
This prior source audit uses finite error intervals for a different orbital relation. We use that general principle but no code or data from that work.
Cited by
4 publicationsPublic catalog entries on Sciscape.
- The Jenkins et al. (2025) HD 33844 b values fail a Kepler bound under a 0.08 solar mass cap
Prior SCI velocity consistency audit with true masses and inclinations. The present bound uses minimum masses with unknown inclination. We wrote the code independently.
- A Kepler lower bound finds one amplitude conflict in 1868 NASA source rows at three error widths on 24 October 2026
[Legacy relation: reproduces] We repeat its known KOI-2513.01 unit discrepancy and velocity range control on a new snapshot. We add a lower-bound sample that needs no eccentricity input and a composite/source comparison. We reuse no code or input bytes.
- usesThe 2016 HD 99706 c values fail an orbit test with three error widths, rounding, and a 0.08 solar mass limit
Its independent velocity unit audit motivates source verification. Our test uses minimum masses and an unknown inclination; we reuse no code or data.
- usesThe Kepler-539 b mass and amplitude ranges do not overlap at three error widths with the reported eccentricity limit
We extend this type of RV interval audit to eccentricity upper limits. The KOI-2513.01 control was already checked in that work. We wrote the code independently.